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1
A
summary
of current U
.
S
.
and international regulations on m
icrowaves related to cell t
owers
Prepared
By
Dr.
Joshua Dennis Booth, PhD
July 2017
I am writing this report as a
knowledgeable voice for the
School Board,
parents
,
and
residents
of
the East Hemp
field school district
with
regard
to the placement of cellular tower
s
at Ro
hrerstown
Elementary School and Centerville Middle School.
My knowledge comes from my experience
wit
h EMP
–
Microwave radiation, as
outline
d
in
the Personal Background
section
at the end of this
document. I
District
community
:
both a parent
concerned about health issues and a homeowner concerned about property
value
.
The numbers
used here for comparison are those given for the Rohrerstown Elementary Tower at th
e zoning
board hearing on June 19
th
, 2017
.
This report is outlined as
follows
.
First
, I give an overview of
the current
U
.
S
.
laws
and agencies
related to
microw
aves,
cellular tower
, and other common
microwave devices
. Second
, I provide an overview of n
on
–
U
.
S
.
laws related to microwaves.
The
second
section serves to demonstrate the most important message of this report
by
showing the
outdated nature of U
.
S
.
regulation, and why we should be concern
ed
about these towers being at
Section 1
, Background, Current U
.
S
.
regulation for key microwave devices
.
In this section, I provide
background about both microwaves in general and cell technology.
Microwave
s
are
electromagnetic
wave
s
that v
ary in frequency between 300 MHz
(i.e., near
Radio)
to 300 GHz
(i.e., near infrared).
At
~70
–
100 MHz the body maximally absorbs energy
and at 3,00
0 MHz the energy is concentrated at the body surface.
This is why there are
regulations about things like radio towers but not standard household lights.
Cell towers use
frequency between 900MHz to 1900MHz.
These waves can also vary in strength
too, and t
his is
the real issue
that will be addressed in the report.
In order to accommodate these variables, a
measurement of power density is often used. Here, we will use the units of uw/cm2 for all
examples
as this is the unit
given to use by the cellular tower
developers, though other areas use
other units.
Note, the Federal Communication Commission
(FCC)
, which is responsible for
microwave regulation in the US,
uses a di
fferent unit of mw/cm2 for their
Maximum Permissible
Exposure (MPE)
[1]
.
Their
proposed tower will
have a power density of a maximum of
3.6uw/cm2.
I note as someone that has done the calculations myself that this maximum is
slightly higher than what most likely will be the power density on day one. This view was also
shared by the c
ell tower developers at the zoning hearing.
However, t
his density may increase in
the future without notice if they sell broadcasting to other cell
vendors
or place higher
wattage/gain equipment
.
More importantly
, the
duration
of exposure
is one
of
the lar
gest issues
up for debate in research.
For students, this would be the whole time they are on campus for class
and
activities
: seven school years, from K to 6
th
grade.
Let us first address the
FCC
and the
current standards set forth by the FCC for
cellular tower
s
.
The FCC is an independent agency formed in 1934 to regulate interstate communications. The
FCC is funded entirely by regulatory fees paid by radio, cell, cable, television, and satellite
companies for access to certain bandwidth in areas
[
4]
. They
have
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